XML 62 R44.htm IDEA: XBRL DOCUMENT
v3.23.3

Inventory (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2021
Inventory Impairments and Land Option Cost Write-Offs [Abstract] |  |  |  |
Inventory Write-down | $ 5.0 | $ 19.0 | $ 3.8 | $ 5.6
Write Offs Recoveries Of Earnest Money Deposits And Pre-Acquisition Costs |  | 61.3 | $ 66.6 | $ 23.0
Carrying Value of Communities Impaired | $ 33.8 | $ 33.8 |  |

X
- Definition Carrying Value of Communities Impaired + References No definition available. + Details
Name: | dhi_CarryingValueOfCommunitiesImpaired
Namespace Prefix: | dhi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Inventory Impairments and Land Option Cost Write-Offs. + References No definition available. + Details
Name: | dhi_InventoryImpairmentsAndLandOptionCostWriteOffsAbstract
Namespace Prefix: | dhi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The net write-off or recovery of earnest money deposits and pre-acquisition costs related to land option contracts during the period. + References No definition available. + Details
Name: | dhi_WriteOffsRecoveriesOfEarnestMoneyDepositsAndPreAcquisitionCosts
Namespace Prefix: | dhi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 330 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483080/330-10-50-2 + Details
Name: | us-gaap_InventoryWriteDown
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration